Hi! I'm new on the forum, and a new owner of Outlander '17 model (used, Norwegian edition). Reading about all you guys have found out is extremely interesting! I installed the Watchdog and looking at the data, I'm wondering what you think about it.
When I bought the car, the battery showed 78% (31.2Ah) capacity. At 52kkm, I guess this is not too good, but that's how it is. I talked to the dealer about DBCAM, and I was thoroughly ignored - but that's another story.
Since the car is still on warranty, I don't yet want to do any DYI resets. I found a very nice page by Richi (https://www.richi.uk/p/mitsubishi-outla ... l#phevfaqH
), where he suggested that we could help the BMU to figure out the actual battery capacity by something similar to the DBCAM procedure. In short:
- discharge the battery as much as is allowed by the car, i.e., drive to empty, leave for an hour (SOC around 25-30%)
- turn on heating from battery, wait until heating stops (SOC at this point is 20%)
- waiting a few hours, confirm SOC of 20%. If more, heat again. If OK, then charge it full
So that's what I did. SOC at the bottom is 20.3% (6.3Ah), with voltage 3.807V. After charging full the dog shows 105.1% (32.7Ah), with voltage 4.097V. Since then the BMU decided my capacity dropped to 77.8% (31.1Ah), but it still sometimes charges up to 32.7Ah.
So my question is - in your opinion, what is the actual SOH of this battery considering the voltage at SOC 20.3? Has anyone succeeded in getting the BMU to improve it's estimate on the battery capacity? I do see potential in my case, but of course I might be wrong.
What do you think?